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US Patent 7507485 Organic electroluminescent device

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Is a

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Patent attributes

Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Hyoung Yun Oh0

Jeong Dae Seo0

Myung Seop Kim0

Sung Koo Lee0

Chun Gun Park0

Date of Patent

March 24, 2009

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Patent Application Number

102549990

Date Filed

September 26, 2002

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Patent Citations Received

US Patent 12122785 Substituted pyridines, pyridazines, pyrimidines, and 1,2,4-triazines as TYK2 inhibitors

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US Patent 11678571 Organic electroluminescent device using aryl amine derivative containing heterocycle

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US Patent 11805697 Organic electroluminescence device and monoamine compound for organic electroluminescence device

US Patent 12084458 Substituted pyridines, pyridazines, and pyrimidines as TYK2 inhibitors

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US Patent 12103937 Substituted pyridines and pyridazines as TYK2 inhibitors

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Patent Primary Examiner

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Patent abstract

Disclosed is an organic electroluminescent device including a first electrode, a second electrode, and a light-emitting layer having a guest material of a red luminescent material and at least two host materials so as to be formed between the first and second electrodes. One of the host materials is a composite including the following structural formula:

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